Lead Software Engineer, Jupus
More information about location
AI support for lawyers
Be an early applicant
AI support for lawyers
1-20 employees
Be an early applicant
More information about location
1-20 employees
Company mission
To minimise the effort in each new mandate request for law firms.
Role
Who you are
- Production-scale Python and Django knowledge and clean architecture
- Front-end experience with Vue 3 or React
- Production knowledge with scaling software
- Rigorous testing: pytest, integration/e2e (Cypress), contract tests
- Automation-first: CI/CD (GitHub), Docker, IaC (Terraform)
- Data layer mastery: PostgreSQL tuning, Redis caching, queues/streams (RabbitMQ/Kafka)
- API design & maintenance: REST/GraphQL, versioning, documentation
- Security by default: OWASP, OAuth/OIDC/JWT, GDPR-aware data handling
- Ability to work independently as the primary technical contributor handling all aspects of development
- Comfort with hands-on coding and technical work even after building a team
- Experience mentoring and developing technical talent
- Excellent communication skills for explaining complex AI concepts to both technical and non-technical stakeholders
- Ability to create and execute Software roadmaps aligned with business objectives
- Strong communicator/mentor; aligns engineering trade-offs with product goals
- Outcome-driven problem solver focused on delivering measurable user value
- You must have at least 4 years of experience with Django
- You must have at least 4 years of professional experience as a Lead
What the job involves
- We’re seeking a pragmatic Lead Software Engineer (Full-Stack, Python-first) to help one of Europe’s fastest-growing legal tech companies scale its software platform end to end. Our AI-powered products are already in market; now we need robust, extensible architecture and impeccable execution to support rapid growth and new feature velocity
- Reporting to the Head of Engineering, you’ll own critical services and user-facing features across the stack while guiding implementation standards
- You’ll stay hands-on while mentoring teammates, enforcing code quality, and driving technical decisions that keep our systems secure, observable, and performant at scale
- For a builder who loves clean abstractions, production-grade code, and working closely with product and AI teams, this is a chance to have outsized impact on a modern, cloud-native platform
- This is a rare opportunity to define how a rapidly expanding product is architected, shipped, and maintained
- As our Lead Software Engineer, you’ll be both system designer and senior IC—translating complex requirements into elegant, reliable software
- You’ll establish patterns for scalability (from modular service boundaries to CI/CD pipelines), ensure our Python services are battle-tested in production, and elevate engineering standards across teams
- Expect real ownership, deep technical problem-solving, and the chance to influence how our platform evolves across markets and use cases
- Architect and implement robust scalable solutions for our product suite
- Design and develop sophisticated systems
- Establish best practices for software development, testing, and deployment across products
- Initially handle development across the stacks as a core technical contributor
- Initially handle development hands-on as the primary technical contributor
- Work with our Head of Engineering to build a high-performing team as our initiatives expand
- Maintain significant hands-on coding involvement even while leading the team
- Work closely with product, design, and AI Engineers to release new features
- Partner with the Head of Engineering and leadership on Engineering roadmap planning
- Translate complex software concepts for both technical and non-technical stakeholders
Our take
As with many industries, AI has sparked a change in how law firms operate. With much time and money funnelled into processing legal documents and mandates, JUPUS has become the first AI legal secretariat in Europe,. It automates the acceptance of mandates, supported by AI chatbots.
JUPUS’s automation platform also includes online appointment booking tools, automated communication with clients and automated inquiry processing. Whilst there are challengers in the US, JUPUS has a hold on the German legal market, with hundreds of firms using its platform, amounting to over 200 inquiries through JUPUS per day.
JUPUS has been quick on its feet to consolidate its European market share, having only completed pre-seed funding in 2023. Its seed funding, obtained only a year later, comes after a hiring spree and is going towards expanding its software and customer base.
Freddie
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 3 rounds)
May 2025
$7.6m
SEED
May 2024
$1.6m
SEED
Total funding: $9.8m
Company benefits
- Technical set-up
- Urban Sports Club Membership
- Remote opportunities
- 30 days vacation
- Opportunity to lead and drive your own initiatives
- Gain experience in a VC-funded and fast-growing legal tech start-up
- A dynamic, motivated team
- Short decision-making processes and an employee-oriented corporate culture
- A long-term perspective with challenging tasks and creative freedom
Company HQ
Komponisten-Viertel, Köln, Germany
Leadership
Rene Fergen
(CEO)Also the Host of the Kanzleikompass podcast. Previously Founder of Legal Tech Trier, and a Sales Assistant at Thesen.
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